The projected impact of climate change on Australia also worries many.

But the darker side of the phenomenon, less readily observable, is what worries many.

What becomes of all the old pins is a problem that worries many simple souls.

One trend that worries many has been growing repression.

This worries many investors who see the group as an unknown quantity at the helm.

Biotechnology is something that worries many people, largely because they know so little about it.

The data worries many in the university sector.

Its willingness to break with established tradition is what worries many critics about Hofer as president.

Others said it made light of assassinating Mr Obama, a possibility they said that worries many Americans.

But Rajapaksa's authoritarian style worries many Protestants, who make up about 2% of the population.

But although South Sudan spent decades fighting Bashir, the idea that he might fall worries many of his former foes.

The situation worries many in the City of London, the financial centre that accounts for roughly one-tenth of the British economy.

The pace of technological change is something which worries many dystopian technologists who believe singularity may come sooner than we think.